12. Income/loss (–) per share

Basic income/loss (–) per share is calculated by dividing the net income/loss (–) attributable to owners of the parent by the weighted average number of ordinary shares outstanding during the year. Diluted income/loss (–) per share is calculated based on the weighted average number of shares (diluted) also considering outstanding warrants, for which our average share price of the year was higher than the exercise price. The possible increase in the number of shares resulting from the outstanding initial warrant B has not been included in the calculation of the diluted income per share as at 31 December 2019 because they were antidilutive.

As we reported a net loss in 2018, the outstanding warrants (specified in note 28) have an anti-dilutive effect rather than a dilutive effect. Consequently, basic and diluted loss per share is the same for 2018.